DS3231 AT24C32 IIC Module Precision Clock Module (without battery) DS3231 Memory Module

説明

DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line. The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.

RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year. The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format. Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus.

A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply. In addition, / RST pin is monitored as generating μP reset manually.

Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time). This temperature sensor accuracy is ± 3 ° C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply. If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.

製品パラメータ

動作電圧：3.3～5.5V

クロックチップ：高精度クロックチップDS3231

時計の精度：周囲温度0～40℃の範囲内で、精度は2ppm、年間誤差は約1分です。

カレンダーアラームが2つ付属

プログラム可能な方形波出力

リアルタイムクロックは、秒、分、時、週、日、月、年の時刻を生成し、2100年まで有効な閏年補正機能を提供します。

このチップには±3℃の精度を持つ温度センサーが内蔵されています。

ストレージチップ：AT24C32（記憶容量32K）

IICバスインターフェース、最大伝送速度400kHz（5V動作時）

他のIICデバイスをカスケード接続することができ、A0/A1/A2を短絡することで24C32のアドレスを変更できます。デフォルトのアドレスは0X57です。

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